Helgeson also says Dikken remains a threat to the victims' families and the public.

The West Central Tribune (http://bit.ly/1btkDw2 ) reports Dikken made his first court appearance Thursday on two counts of second-degree murder. Dikken was the subject of a two-week manhunt after the Sept. 2 shootings at Monson's Granite Falls home.

The Bureau of Criminal Apprehension says Dikken showed up at his parents' Renville home Tuesday and they immediately turned him in to the Renville County sheriff's office.